Infrared Spectroscopy (VCE SSCE Chemistry): Flashcards

Functional groups

Absorb higher frequency IR radiation

Absorb higher frequency IR radiation

$\text{cm}^{-1}$

Below $1400 \text{ cm}^{-1}$

$3200-3600 \text{ cm}^{-1}$, broad

Around $1700 \text{ cm}^{-1}$, strong and narrow

$2500-3300 \text{ cm}^{-1}$, very broad

NaCl or KBr (transparent to IR)

Vibrations must change the overall dipole moment